Orders in Finale Inventory can have tax items on them the either come from outside of Finale Inventory from your marketplace or from a calculated tax you added to a manual order in Finale Inventory.
Keys to This Working
You have created a Chart of Accounts in your QuickBooks with the account type of Other Current Liability and detail type of Other Current Liability.
You have created a Non-Inventory QuickBooks Item with the exact same name as the Tax item in Finale Inventory, and that item in QuickBooks is enabled for Sales and linked to the above mentioned Other current liability account. This item in QuickBooks should be non-taxable otherwise it will be taxed by QuickBooks.
When you have tax items on the invoice they were named in the Application Settings, Selling, Adjustments or Calculated tax areas. The name is important.
Calculated tax example
OR
Adjustments example
The tax items you create must exist in your QuickBooks as a Non-inventory item, but before you create or use the QuickBooks Item you must make sure you have a Chart of Accounts to link or hook that QuickBooks Item to. It must be an Account type Other Current Liability.
You cannot use the built-in Sales Tax payable account!
After you have created or made sure you have an Other Current Liability account, you link it to the income account on the non-inventory item you create to match the Tax item you created in Finale Inventory.
Below are examples of sales orders/invoices in Finale Inventory that would use the Calculated Tax item or Adjustment item on a sales order.
Calculated tax item
OR
Adjustment item